Lake Graham: 70.7% full as of 2026-08-15
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-08-15 | 70.7 | 1,069.12 | 32,012 | 31,998 | 45,288 | 2,013 |
| Yesterday | 2026-08-14 | 70.8 | 1,069.16 | 32,092 | 32,078 | 45,288 | 2,016 |
| 2 days ago | 2026-08-13 | 71.0 | 1,069.20 | 32,173 | 32,159 | 45,288 | 2,020 |
| 1 week ago | 2026-08-08 | 72.0 | 1,069.42 | 32,619 | 32,605 | 45,288 | 2,038 |
| 1 month ago | 2026-07-15 | 75.1 | 1,070.10 | 34,025 | 34,011 | 45,288 | 2,103 |
| 3 months ago | 2026-05-15 | 78.5 | 1,070.82 | 35,559 | 35,545 | 45,288 | 2,157 |
| 6 months ago | 2026-02-15 | 77.8 | 1,070.67 | 35,236 | 35,222 | 45,288 | 2,147 |
| 1 year ago | 2025-08-15 | 91.8 | 1,073.47 | 41,596 | 41,582 | 45,288 | 2,339 |
*
Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.
**
Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.
Most Recent Instantaneous Water Level
| Date/time |
Water Level (ft) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-08-15 19:00 | 1,069.09 | 1,075.00 | -5.91 |
| 1 hour prior | 2026-08-15 18:00 | 1,069.09 | 1,075.00 | -5.91 |
| 2 hours prior | 2026-08-15 17:00 | 1,069.09 | 1,075.00 | -5.91 |
| 6 hours prior | 2026-08-15 13:00 | 1,069.12 | 1,075.00 | -5.88 |
| 12 hours prior | 2026-08-15 07:00 | 1,069.13 | 1,075.00 | -5.87 |
| 24 hours prior | 2026-08-14 19:00 | 1,069.16 | 1,075.00 | -5.84 |
| 48 hours prior | 2026-08-13 19:00 | 1,069.19 | 1,075.00 | -5.81 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1958-01-01 |
| Vertical datum | NGVD29 +1.3 |
| Dead pool elevation | 1,030.00 ft above NGVD29 +1.3 |
| Service spillway crest elevation | 1,076.30 ft above NGVD29 |
| Top of dam elevation | 1,093.30 ft above NGVD29 |
| Conservation pool elevation | 1,075.00 ft above NGVD29 +1.3 |
| Data download (CSV) | period of record, last one year, last 30 days |
| Data Source | USGS:08088400 |
| USGS Monitoring Location | USGS:08088400 |
Lake Location
